Police arrested a 19-year-old volunteer firefighter and former junior fireman and charged him with setting two fires in his own Long Island firehouse.

Clifford Seaman, of Petit Place, Bellmore, was charged with arson and resisting arrest. He lived on the same street as the Bellmore Fire Headquarters, where he had been a fireman for the past 18 months, police said.

The first fire last Saturday did little damage, but the second fire Thursday gutted the second floor of the firehouse and caused structural damage.